Message Dialog

Display Update Message

Product Comparison

The maximum number of products that can be compared is 4. Please refine your selection.

Your session is about to timeout due to inactivity. Click OK to extend your time for an additional 30 minutes.

[ ]

This item has been successfully added to your list.

Continue Shopping

Select a Country/Region and Language

Select a Country/Region

Select a Language

Product(s) in your cart may not be available in the selected country and will be removed from your cart if you choose the “SELECT” button below. Please contact us if you need assistance purchasing this product in another country.

SG (EN) Singapore (English)
Contact Us

Products
Products

Actuators

Actuators

Products

Controllers, Instruments & Software

Hydraulic Actuators

Electric Actuators

Pneumatic Actuators

Gear Operators & Gearboxes

Pneumatic Cylinders

View All Actuator Products

Brands

AVENTICS

Bettis

VIEW ALL BRANDS

Asset Performance Management

Asset Performance Management

Products

Field Device Management

Reliability Solutions

View All Asset Performance Management Products

Brands

AMS

VIEW ALL BRANDS

Control & Safety Systems

Control & Safety Systems

Products

Distributed Control Systems (DCS)

Programmable Automation Control Systems (PLC/PAC)

Hydro Governors

Safety Instrumented Systems (SIS)

Industrial Computing

SCADA, Remote Terminal Units (RTU) & Flow Computers

View All Control & Safety Systems Products

Brands

DeltaV

Guardian

Movicon

Ovation™

PACSystems

VIEW ALL BRANDS

Electrical & Lighting

Electrical & Lighting

Products

Controls

Hazardous & Explosionproof Lighting Solutions

Distribution Equipment

Plugs & Receptacles

Electrical Fittings

Reels & Switches

Enclosures & Junction Boxes

Electrical Construction Materials & Lighting

Industrial Heat Tracing

Indoor & Outdoor Heating Cables

View Electrical & Lighting Products View Electrical Construction Materials

Brands

Appleton

Nelson

SolaHD

VIEW ALL BRANDS

Industrial & Factory Automation

Industrial & Factory Automation

FEATURED PRODUCTS

Solenoid Valves

Pneumatics

Industrial Hardware & Software

Products

Seat Valves

Electric Motion Control

Control Power Solutions

Dust Collector Valves

Pressure Regulators & Valves

Fuel Gas & Shutoff Valves

Sensors & Switches

Marine Controls

Proportional Valves

Pinch Valves

View All Industrial & Factory Automation Products

Brands

ASCO

AVENTICS

Movicon

PACSystems

SolaHD

TESCOM

TopWorx

VIEW ALL BRANDS

Measurement Instrumentation

Measurement Instrumentation

Featured Products

Flow Measurement

Pressure Measurement

Level Measurement

Temperature Measurement

Products

Corrosion & Erosion Monitoring

Industrial Wireless Technology

Density, Viscosity & Refractometers

Liquid Analysis

Flame & Gas Detection

Marine Measurement & Analytical

Flow Measurement Systems

Tank Gauging System

Gas Analysis

View All Measurement Instrumentation Products

BRANDS

Flexim

Micro Motion

Plantweb Insight™

Rosemount

Roxar

VIEW ALL BRANDS

Professional Tools & Vacuums

Professional Tools & Vacuums

Products

Construction, Repair & Maintenance Tools

Mechanical, Electrical & Plumbing Tools

Vacuum Equipment

Brands

Greenlee

Klauke

ProTeam

RIDGID

View all Brands

Regulators

Regulators

Products

Pressure Reducing Regulators

Back Pressure Regulators

Slam Shut Devices

View All Regulators Products

Brands

Fisher

TESCOM

VIEW ALL BRANDS

Test & Measurement

Test & Measurement

Products

NI Data Acquisition

Source Measure Units

NI Software

LCR Meters

GPIB & Instrument Control

Software Defined Radios

Switches

NI Vector Signal Transceivers

Oscilloscopes and Digitizers

NI Vector Signal Generators

Digital Multimeters

NI Vector Signal Analyzers

Brands

NI LabVIEW

NI SystemLink

NI CompactDAQ

NI CompactRIO

NI PXI

NI FlexRIO

Valves

Valves

Products

Control Valves

Valve Controllers & Positioners

Pressure Relief Valves

Steam Traps

Isolation Valves

Vacuum Valves

Propane Valves

Nuclear Valves

Vent Valves

Safety Relief Valves

View All Valves Products

Brands

AEV

Anderson Greenwood

ASCO

Clarkson

Crosby

Fisher

Keystone

KTM

Vanessa

VIEW ALL BRANDS

Welding, Assembly & Cleaning

Welding, Assembly & Cleaning

Featured Products

Ultrasonic Welding

Products

Heat Staking

Plastic Vibration Welding

Hot Plate Welding

Infrared Plastic Welding

Ultrasonic Cleaning

Laboratory Equipment

Laser Welding

Custom Tooling Services

View All Welding, Assembly & Cleaning Products

Brands

Branson

VIEW ALL BRANDS

Software
Software

Advanced Industry Software

Advanced Industry Software

SOFTWARE

Food & Beverage

Oil & Gas

Life Science

Power

Manufacturing

Water/ Wastewater

Brands

AMS

AspenTech

DeltaV

Movicon

Ovation™

VIEW ALL BRANDS

Automation Software

Automation Software

Software

Cybersecurity

Process Control for Power & Water Industries

Field Device Software

Process Control for Process Industries

Industrial Hardware & Software

SCADA Systems

Brands

AMS

AspenTech

DeltaV

Movicon

Ovation™

VIEW ALL BRANDS

Operations Management Software

Operations Management Software

Software

Asset Optimization with AspenTech

Manufacturing Operations Management

Asset Performance Management

Operator Performance

Digital Twin & Simulation

Plantweb Insight™ Applications

Brands

AMS

AspenTech

DeltaV

Ovation™

VIEW ALL BRANDS

Industries
Industries

Automotive

Chemical

Electronics

Food & Beverage

Life Sciences

Marine

Medical

Mining, Minerals & Metals

Oil & Gas

Packaging

Power Generation

Pulp & Paper

Water & Wastewater

Services & Support
Services & Support

Support

Contact Us

Engineering Tools

MyAssets

Order Status

Software Downloads & Drivers

Videos

Warranties & Returns

Technical Documentation & Drawings

Certifications & Approvals

Data Sheets & Bulletins

Drawings Center

Legal & Compliance

Manuals & Guides

Security Notifications

Contact Us Educational Services & Training Lifecycle Services

Contact Us

My Training

Company
Company

About Us

About Us

Awards & Recognition

Diversity, Equity & Inclusion

History

Integrity & Ethics

Leadership

Our Brands

Our Purpose, Causes & Values

Careers

Careers

Life at Emerson

Students & Graduates

Explore All Opportunities

Investors

Investors

Press Releases

Events & Presentations

Financials

Email Alerts

Stock Info

ESG

Resources

Information Request

Driving ESG Progress

Driving ESG Progress

Environmental Sustainability

Social Responsibility

Governance & Accountability

Expertise

Expertise

Automation Experts Blog

Capital Projects

Cyber Security

Exchange365 Customer Community

Executive Perspectives

Plantweb™ Digital Ecosystem

Video Center

Webinar Center

Workplace Safety

News & Events

News & Events

Emerson Exchange

Innovation Stories

Media Resources

Newsroom

Contact Us

Our Brands

Products

Actuators

Products

Controllers, Instruments & Software

Hydraulic Actuators

Electric Actuators

Pneumatic Actuators

Gear Operators & Gearboxes

Pneumatic Cylinders

View All Actuator Products

Brands

AVENTICS

Bettis

VIEW ALL BRANDS

Asset Performance Management

Products

Field Device Management

Reliability Solutions

View All Asset Performance Management Products

Brands

AMS

VIEW ALL BRANDS

Control & Safety Systems

Products

Distributed Control Systems (DCS)

Programmable Automation Control Systems (PLC/PAC)

Hydro Governors

Safety Instrumented Systems (SIS)

Industrial Computing

SCADA, Remote Terminal Units (RTU) & Flow Computers

View All Control & Safety Systems Products

Brands

Electrical & Lighting

Products

Controls

Hazardous & Explosionproof Lighting Solutions

Distribution Equipment

Plugs & Receptacles

Electrical Fittings

Reels & Switches

Enclosures & Junction Boxes

Electrical Construction Materials & Lighting

Industrial Heat Tracing

Indoor & Outdoor Heating Cables

View Electrical & Lighting Products View Electrical Construction Materials

Brands

Industrial & Factory Automation

Suggested Keywords

Suggested Categories

Select a Country/Region and Language

Select a Country/Region

Select a Language

Product(s) in your cart may not be available in the selected country and will be removed from your cart if you choose the “SELECT” button below. Please contact us if you need assistance purchasing this product in another country.

SG/EN Singapore (English)

Home
Anderson Greenwood Type 4020 Atmospheric Pressure and Vacuum Valves

Anderson Greenwood Type 4020 Atmospheric Pressure and Vacuum Valves

Warning

Taking this action may invalidate your quote. Do you wish to proceed?
Proceeding will convert your shopping cart into a standard order so that you can make changes.

Proceed

Cancel

Warning

Taking this action may invalidate your quote. Do you wish to proceed?
Proceeding will convert your shopping cart into a standard order so that you can make changes.

Proceed

Cancel

Product Description

Weight or spring loaded valves capable of providing pressure and vacuum relief that vent to atmosphere. Designed and tested to reduce costs and emissions with higher flow capacities and industry leading conformity to API 2000

Compare Products

Clear All

Compare

The maximum number of products that can be compared is 4. Please refine your selection. Dismiss

Clear All

Compare

Go Boldly.™

Emerson is the global technology, software and engineering powerhouse driving innovation that makes the world healthier, safer, smarter and more sustainable.

Our Company
Leadership
Environmental, Social & Governance
Careers
Diversity, Equity & Inclusion
Contact Us
Newsroom
Investors

Our Passions
Sustainability
Perspectives
Innovations
We <3 STEM

Our Communities
Top Quartile
Emerson Exchange 365
Automation Experts
CONNECT WITH US

Privacy Notice
Cookies
Terms of Use
Data Protection
Imprint
Accessibility
Communication Preferences
Report a Vulnerability

You have an active session in another locale:

By selecting a new country/region, product(s) may be unavailable and items in your shopping cart will be removed. Please contact us for assistance.